DF4 Secure Client Portal

Have a secure transfer link from DF4? Open the unique link in your DF4 message to upload files for that transfer. Uploads do not start from this public page.

Need a link, or has yours expired? Use the button below to request one through Contact, or email evidence@df4technicalinvestigations.com. Provide only your name and a non-sensitive matter reference. DF4 will review the request and issue a transfer-specific link after authorization.

Do not attach evidence, passwords or confidential case details to a contact form or email. Use the secure upload link supplied by DF4 for your files.